Revolving-cylinder engine



(No Model.)

J. J. BLAIR.

REVOLVING CYLINDER ENGINE.

No. 331,939. Patented Dec. 8, 1885.

MITOBNEYS.-

UNITED STATES Arena? JOHN J. BLAIR, or CINCINNATI, OHIO.

REVOLVING -CYLINDER ENGINE.

E-SPECIFICATION forming part of Letters Patent No. 331,939, dated December 8, 1885.

Application filed April 15, 1885. Serial No. 162,356. (No model.)

To all whom it may concern: valve J, held on the same, also to revolve with Be it known that I, JOHN J. BLAIR, of Ointhe cylinder. The valve J is provided with cinnati, in the county of Hamilton and State two opposite segmental recesses, U, as shown of Ohio, have invented a new and Improved in Fig. 2, in which the cut-off valves U are 55 RevolvingCylinder Engine, of which the folplaced, whereby the said cut-off valves are lowing is a full, clear, and exact description. revolved with the valve J; but the said valves This invention relates to certain new and can slide independently of the cutoff valves.

useful improvements in that class of engines A tube, K, is connected with the piston and in which the piston is fixed and the cylinder divided by a partition, L, into two channels, 60

I revolves around the piston, and which are L L, the former being the exhaust-channel known as revolvingcylinder engines. and the latter the inlet-channel. The ends of The invention consists in various parts and, the channels are in communication with holdetails and combinations of the same, as will low rings Z on the tube K, the said rings bebe fully set forth and described hereinafter. ing connected with the steam supply and ex- 6 Reference is to be had to the accompanying haust pipes. The rod I passes through a drawings, forming part of this specification, stuffing box, M, in the end of the tube K, in which similar letters of reference indicate and on the outer end of therod I a disk, N, is K corresponding parts in all the figures. mounted, on which two curved springs, N, Figure 1 is a longitudinal sectional elevaare secured to project toward the end of the 70 tion of my improved revolving-cylinderentube K. A sleeve, P, surrounds the rodI begine. Fig. 2 is a cross-sectional elevation of tween the plate N and the end of the tube K, the same on the line a: w in Fig. 1. Fig. 3 is and tojaws on the said sleeve two angle-levers, a cross-sectional view on the line wm, Fig. 1. O, are pivoted, having their short outwardly- Fig. 4 is a cross-sectional view on the line yy, projecting shanks resting against theinnerside 7 Fig. 1. Fig. 5 is a cross-sectional view on the of the plate N, and their long shanks project line .2: z, Fig. 1. Fig. 6 is'a longitudinal secing toward the end of the tube K and carrying l tional elevation of the rolling valve. weights I. The inner ends of the springs N The cylinder A is provided with the ellipare secured to the levers O. A key, m, is se- A tical cavity B, slightly contracted at the midcured in the rod I and in the sleeve 1? in such 8c die, and having packing-strips B at the mid a manner as to cause the sleeve P to revolve dle. The cylinder surrounds the cylindrical with the rod I, but to permit the rod to slide piston O, which is in contact with the packing in the sleeve. The rolling valve E is provided strips B at diametrically-opposite points, and in its end with a groove, E, for receiving its between which and the cylinder the two steampacking. The rod I is arranged to revolvein 85 g chambers G Care formed. The piston is proa groove, 8, in the partition L in the tube K. vided with two diametrically-opposite longi- The operation is as follows: The steam passes tudinal grooves, D, for receiving the cylin through the channel L into the hollow T of drical rolling valves E, which rest against the piston, into the central bore, and from the rollers F'in grooves F, adjacent to the grooves same through the channels or ports D and 0 1), packing-strips G resting against the rollers grooves D into the spaces 0 between the pis- F. From the bottoms of the grooves D two ton and the cylinder. The steam forces out apertures, D, lead to the central bore, H, of the rolling valves E against the inner surface the piston in which the sliding valve J is arof the cylinder, and the steam, abutting against ranged, which is mounted rigidly on a rod, I, the said valves, acts on the sides of the cylin- 5 5 passing longitudinally through the middle of der and revolves it in the direction of the arthe piston, and provided with a longitudinal row a; As the cylinder revolves, the parts slot, 1, through which a pin, J passes, which in contact with the piston gradually move to- W is held in the part J of the frame R, which is ward the rolling valve and press the said valve connected by the pin S with the cylinder, so down into the corresponding groove- 7 IC as to cause the said frame R to revolve with the ki gft erptgema ni 111 001113571105 the cylinder, thus causing therod I and the wit lsfoll have Passed Off the lonlng Fig. l, shuts (shown in dotted lines,) thus permitting only steam forces the valves out again and the action takes place as described above. The exhaust-steam passes through channels #(shown in dotted lines in Fig. 2) into the exhaust-channel L. As the rolling valves E roll on the pivoted rollers F, the friction is reduced very much. The valve J serves to regulate the quantity of steam admitted into the space between the cylinder and piston, and when moved in the direction of the arrow b, more or less of the ports D,

a small quantity of steam .to pass into the space 0.

WVhen the cylinder revolves too rapidly, the weights P fly out, and their levers P, acting on the plate N, move the same in the direction ofthe arrow 1), Fig. l, and move the valve J in the same direction, thus causing less steam to be admitted, whereby decreased speed is obtained. When the cylinder revolves slower, the weights P swing back, and by means of the springs N pull back the plate N, the

rod 1, and the valve J in the inverse di'.

rection of the arrow 1), thus admitting more steam into the spaces 0. The speed of the engine is thus regulated automatically by means of a very simple contrivance.

The cut-off valves U cut off the steam at whatever point desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a revolving-cylinder engine, the combination, with a fixed piston and a revolving cylinder surrounding it, ofa cylindrical chamber in the piston, a sliding valve in the said chamber, a rod connected with the revolving cylinder and the sliding valve, a sleeve surrounding one end of the rod, weighted levers on the sleeve, and a plate on the end of the said rod, against which plate the ends of the weighted levers rest, substantially as herein shown and described.

2. In a revolving-cylinder engine, the combination, with a fixed piston and a revolving cylinder surrounding it, of a cylindrical chamber in the piston, asliding valve in the cham ber, a rod connected with the sliding-valve and the revolving cylinder, the plate N on the end of the rod, the sleeve P, surrounding the rod, the weighted angle-levers O, pivoted on the sleeve, and the springs N secured to thelevers and to the disk N, substantially as herein shown and described.

3. In a revolving cylinder' engine, the combination, with the piston O and the cylinder A, of the sliding valve J in the bore of the piston, the rod I, having the slot I, the frame R, connected with the cylinder, the pin J held in the frame It and passed through the slot 1 of the rod I, and agovernor on the end of the rod I, substantially as shown and described.

4. In-a revolving-cylinder engine, the combination, with the fixed piston 0, having grooves D, of the revolving cylinder A and the rolling valves E, substantially as herein shown and described.

5. In a revolving-cylinder engine. the combination, with the fixed piston 0, having grooves D, of the revolving cylinder A, the

rolling valves E, and the rollers F, pivoted adjacent to the grooves D, substantially as herein shown and described.

6. In a revolvingcylinder engine, the combination,with afixed piston, G, of the revolving cylinder A, the sliding revolving valve J, having recesses U, and the cutoff valves U, placed in the said recesses, substantially as herein shown and described.

7. In a revolving-cylinder engine, the combination, with the fixed piston G, having grooves D, from which ports D lead to the bore of the piston, of the sliding revolving valve in the bore, a rod on which the sliding revolving valve is mounted, a governor connected with the said rod, and of the rolling valves E, substantially as herein shown and described.

JOHN J. BLAIR.

Witnesses:

EDWARD H. BAKER, PHILIP S. GooDWIN. 

